These aluminium casement windows feature outward opening or awning operation and meet NFRC, AS2047, and CE certifications for commercial, residential, and exterior applications.
- DERCHI manufactures slim frame aluminium windows from a 70,000+ m² factory with 600+ employees and a 20+ expert R&D team
- The product line is backed by 100+ national patents and 50+ industry honors
- 100% full inspection is performed before shipment, with one-stop customer service from ordering to shipment
Product Details
The slim frame aluminium window is an aluminum casement window from the WY-118L series with a 1.8MM profile thickness and 118MM frame width, using a DERCHI S18 multi-cavity insulation strip and a PVDF aluminum strip between double tempered glass filled with argon gas (5mm+27A+5mm). The window operates with outward opening or awning action, driven by WEHAG hardware including a WEHAG handle available in black and silver, a WEHAG hinge, and a DERCHI independently developed 13-inch flat open friction hinge, secured by a WEHAGE lock point and lock seat system with a six-point locking mechanism that carries an invention patent. Production follows a defined sequence: surface treatment, profile processing and cutting, glass cutting and aluminum strip installation, opening panel installation, frame and casing assembly, troubleshooting and sealing, and packing.
Procurement teams should confirm the glass configuration from seven available options (single, tempered, double-glazed, triple, insulating, laminated, and frosted), the color finish from two PVDF options (Retro Green, Mint Gold) and ten stock color options, and the optional package (New 48 Pack or New 88 Pack) before ordering, as the U-factor of 0.23 and SHGC of 0.20 apply specifically when configured with double tempered glass filled with argon gas. The WY-118L series supports ten customizable layout configurations including fixed panels, casement sashes, and awning openings, and DERCHI can supply the complete window system (profile, hardware, accessories, and glass) or finished products ready for installation. Products meet NFRC, AS2047, and CE certifications, undergo 100% full inspection before shipment, carry a 10-year quality warranty covering frame unfading and hardware operation, and deliver in 25-35 days after deposit and drawing confirmation.
Product Features
- 118MM frame width with 1.8MM profile thickness — sets the structural envelope for large-format casement sashes
- Outward Opening / Awning operating mode — choose when interior clearance is constrained or rain-day ventilation is required
- WEHAG handle available in Black, Silver, and antique bronze — match hardware finish to the interior design palette
- Six-point locking mechanism with invention patent — select for projects specifying multi-point security
- 35 dB sound insulation rating — choose for acoustic isolation near traffic or urban noise
- 700Pa water tightness — confirm suitability for rain-exposed facades
- 5 kPa wind pressure resistance — confirm fit for high-rise or wind-exposed locations
- U-factor 0.23 and SHGC 0.20 — select for energy-code compliance targets
- NFRC, AS2047, and CE certifications — confirm regulatory acceptance for target markets
Customizable Styles
- Color finishes: two PVDF options (Retro Green, Mint Gold) and ten stock color options including wood-grain textures, solid metallic, and matte finishes.
- Glass configurations: seven options available — single-pane, tempered, double-glazed, triple-glazed, insulating, laminated, and frosted.
- Layout configurations: WY-118L series supports ten customizable layouts including fixed panels, casement sashes, and awning openings.
- Optional packages: New 48 Pack and New 88 Pack.
- Handle finish: WEHAG Handle available in Black and Silver.
- Opening method: Outward Opening or Awning.
Hardware Accessories
- WEHAG handle available in Black and Silver finishes, with a WEHAG standard no-base handle variant in black, silver, and antique bronze, is the named hardware specification for compatibility review.
- WEHAG hinge paired with a 13-inch flat open friction hinge independently developed by DERCHI.
- Black Six Point Lock with invention patent, integrated with the WEHAG lock point and lock seat system for six-point locking.
- DERCHI customized transmission box and independently developed handle designs available for the WY-118L series.
- 10-year quality warranty covers hardware and accessories working properly under correct operation.
- DERCHI supplies the complete window system including profile, hardware, accessories, and glass as finished products ready for installation.
- Handle finish selection and hinge type should be confirmed against project aesthetic and opening-direction requirements before specification.
Basic Parameters
| Performance Dimension | Declared Value | What It Means | Test Evidence to Request |
|---|---|---|---|
| Thermal Insulation | U-factor 0.23; SHGC 0.20; S18 multi-cavity insulation strip | Thermal performance should be compared using the declared rating, test method, specimen configuration, and project boundary conditions. | Request the applicable thermal test or simulation report and the declared product configuration. |
| Wind Pressure Resistance | 5 kPa | Wind pressure resistance should be reviewed against the specified test pressure, specimen size, anchorage, and acceptance criteria. | Request the wind-pressure test report and confirm the tested specimen and installation conditions. |
| Water Tightness | 700 Pa | Water tightness should be reviewed against the test pressure, spray exposure, specimen configuration, and leakage criteria. | Request the water-penetration test report and confirm the tested pressure and assembly configuration. |
| Air Tightness | 1.2 m³/(m·h) | Air tightness should be reviewed against the pressure differential, specimen area, reporting units, and tested configuration. | Request the air-leakage test report and confirm its pressure and specimen configuration. |
| Sound Insulation | 35 dB | Sound insulation should be compared using the stated laboratory method, specimen construction, glazing, and reported acoustic metric. | Request the acoustic test report and confirm that the tested construction matches the proposed configuration. |
Product Specifications
| Specification | Value |
|---|---|
| Glass | Double Tempered Glass with argon gas, 5mm+27A+5mm, PVDF Aluminum Strip between double glass |
| Profile Thickness | 1.8 mm |
| Frame Width | 118 mm |
| Insulation Strip | DERCHI insulation strip (S18 multi-cavity) |
| Opening Way | Outward Opening / Awning |
| Handle | WEHAG Handle in Black and Silver |
| Hinge | WEHAG Hinge |
| Lock Point | Black Six Point Lock (Invention patent) |
| Optional Package | New 48 Pack / New 88 Pack |
| U-factor | 0.23 (with double tempered glass + argon configuration) |
| SHGC | 0.20 (with double tempered glass + argon configuration) |
| Warranty | 10 years quality warranty |
| Delivery Time | 25–35 days after deposit and drawing confirmed |
- Confirmed shop drawings — required before production scheduling.
- Deposit payment — delivery timeline starts after deposit and drawing confirmation.
- Glass configuration selection required.
- Color finish selection required.
- Layout configuration selection required.
- Optional package selection required.
Advantages
- 70,000+ m² factory with 600+ employees and 15+ years of aluminum window and door manufacturing experience.
- 20+ expert R&D team holding 100+ national patents including invention, appearance, and design patents.
- 100% full inspection before shipment, with products meeting NFRC, AS2047, and CE certifications.
- OEM/ODM capability reduces project risk by accommodating buyer-specific requirements through the company's own customization options and distributor network across 100+ countries.
- One-stop customer service from ordering to shipment, with engineering and supervising installation service available.
- 25-35 day delivery after deposit and drawing confirmation.
- 10-year quality warranty covering frame, hardware, and accessories.
Application Scenarios
| Scenario | Fit Basis | Confirm Before Specification |
|---|---|---|
| Coastal or high-precipitation commercial buildings | Slim frame aluminium windows applied in commercial, residential, and exterior scenarios including coastal or high-precipitation commercial buildings. | Confirm watertightness class against project wind-driven rain exposure; comparable slimline systems rate Class 9A at 600 Pa. |
| High-rise commercial structures | Slim frame aluminium windows applied in high-rise commercial structures. | Confirm wind resistance class against project wind load calculations; comparable slimline systems rate Class C4 at 1600 Pa. |
| Buildings near traffic corridors | Slim frame aluminium windows applied in buildings located near traffic corridors. | Confirm acoustic insulation rating against project noise reduction targets; comparable slimline systems achieve Rw 45 dB. |
| Energy-efficient commercial facilities | Slim frame aluminium windows applied in commercial facilities requiring energy efficiency. | Confirm U-value and thermal insulation variant meet project energy performance targets; comparable slimline systems rate thermal insulation as Passive. |
| Residential apartments and villas | Slim frame aluminium windows applied in residential buildings, apartments, and villa projects. | Confirm opening direction and hardware configuration suit occupant access requirements. |
| Office buildings and hotels | Slim frame aluminium windows applied in office buildings and hotels. | Confirm glazing package and frame finish align with daylighting and interior design requirements. |
| Home offices | Slim frame aluminium windows applied in home office environments. | Confirm sash operation type and size range fit available wall opening dimensions. |
FAQ
What must be confirmed technically before ordering?
Pricing is based on buyer's specific requirements including shop drawings, frame color, glass type, and glass thickness. The complete window system can be supplied with profile, hardware, accessories, and glass, or as finished products ready for installation.
What should buyers prepare for volume procurement?
Delivery takes 25-35 days after deposit and drawing confirmation. Optional packaging options include New 48 Pack or New 88 Pack. A 10-year quality warranty covers the frame, hardware, and accessories.
Which test reports or certification documents must be confirmed for the project?
Products can be tested and certified per buyer requirements.
Is installation support available for the window system?
Engineering and supervising service is available for installation guidance.
What quality control is performed before shipment?
100% full inspection is performed before shipment.
